To download and run PSP ISO files from platforms like MovGameZone , follow this guide for setting up your games on either an original PSP console or the PPSSPP emulator.
To improve performance, go to Settings > Graphics :
Set to Off for smoother gameplay if your device can handle it. 3. Setup for Original PSP Hardware
Disconnect the PSP, go to the Game menu on the XMB, and select Memory Stick to see your loaded titles. How to load ISO/CSO for PPSSPP on iOS (iPhone and iPad)
After downloading, extract the file (if zipped) to get the .iso or .cso file. Move this file into a dedicated folder on your device, such as Documents/PSP/GAME .
Use a USB cable to plug your PSP into your computer.
If you are playing on an actual PSP console, ensure it has custom firmware capable of running downloaded games.
Select the blue Download button and then click Download anyway if prompted.